set::operator=


public member function
set<Key,Compare,Allocator>&
     operator= ( const set<Key,Compare,Allocator>& x );

Copy container content

Assigns a copy of the elements in x as the new content for the container.

The elements contained in the object before the call are dropped, and replaced by copies of those in set x, if any.

After a call to this member function, both the set object and x will have the same size and compare equal to each other.

Parameters

x
A set object with the same class template parameters (Key, Compare and Allocator).




Return value

*this

Example

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// assignment operator with sets
#include <iostream>
#include <set>
using namespace std;

int main ()
{
  int myints[]={ 12,82,37,64,15 };
  set<int> first (myints,myints+5);   // set with 5 ints
  set<int> second;                    // empty set

  second=first;                       // now second contains the 5 ints
  first=set<int>();                   // and first is empty

  cout << "Size of first: " << int (first.size()) << endl;
  cout << "Size of second: " << int (second.size()) << endl;
  return 0;
}

Output:
Size of first: 0
Size of second: 5


Complexity

Linear on sizes (destruction, copy construction).

See also

set::insert Insert element (public member function)
set::set Construct set (public member function)